Ch 11 HW i 3 5 points Saved Help Sav Exercise 11-19A (Algo) Margin of safety LO 11-6 Information concerning a product produced by Ender Company appears here: Sales price per unit 00:57:23 Variable cost per unit eBook Total annual fixed manufacturing and operating costs $ 175 $ 78 $611,100 Print References Required Determine the following: a. Contribution margin per unit. b. Number of units that Ender must sell to break even. c. Sales level in units that Ender must reach to earn a profit of $281,300. d. Determine the margin of safety in units, sales dollars, and as a percentage.